Pump



G. A. HUMASON.

PUMP. 7

APPLICATION FILED JAN-Z0, I920 RENEWED DEC. 4,1920.

1,380,476, Patented June 7, 19 21.

2' SHEETS-SHEET I.

2z GRANVILLE AHUMASON, JNVILNTQA? 2.4-

ATTORNEY G. A. HUMASON.

PUMP.

APPLICATION FILED JAN. 20. i920 RENEWED DEC. 4, 1920.

Patented June 7, 1921 2 SHEETS-SHEET 2- @mwwm A. Humww, mwdmwfi GRANVILLE A. HUMASON, OF'HOUSTON, TEXAS.

PUMP.

Specification of I etters Patent. ii Patentgd June 7, 1921 Application filed January 20, 1920, Serial 110 352560. Renewed December 4, 1920. Serial No. 428,380.

To all whom it may concern:

Be it known that I, GRANVILLE A. HUMA- soN. a citizen of the United States, residing at Houston, Harris'county Texas,. have in- I vented a certain new and useful Improveverse section in the; direction of the arrows ment in Pumps. of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in pumps and has particular reference to the plunger to be employed in reciprocat ng deep well pumps. It is an improvement on the pump shown in my Patent No. 1,825,565, issued December 23,1919.

This type of pump is especially adapted for-working in oil or water which is accompanied by more or less sand or grit tending to Wear the working parts of the pump and especially the plunger and the working barrel adjacent thereto so as-to-quickly reduce their efficiency.

An object of my invention is to provide a pump p unger so constructed as to be expansible for the purpose of taking up wear which may occur withou'tthe necessity of removing the plunger from the well.

Another object is to so arrange the expanding parts connected with the plunger that they will not expand exceptwhen desired and will then be expansible only to the amount required to take up the wear "occurring in -the .operation thereof.

Another object is to provide a supplementary lifting means in connection with the plunger which will most efiiciently assist in the raisingof the fluid from .the well.

Other objects and advantages will more clearly appear in the description which fol lows and will be set forth with particularity in the claims.

pump barrel showing an elevational view.

of the plunger; Fig. 318 a transverse section on the line 3-3 of Fig. 1; Fig. 4 is a transon the line 44 of. Fig. 5; Fig. 5 is a transverse section through the pump plunger and working barrel of the f-pump showing a" slightly modified :form of plunger; and Fig.

In the embodiment of my invention shown.

in Fig. 1 I have a working barrel 1 which is closed at the upper end at 2 and provided with a gland 3 through which the sucker rod 4 is-adapted to reciprocate. At some point in the working barrel I place a diaphragm 5 to provide a closure across the working barrel for a purpose which will presently appear. In the drawing I have shown this diaphragm adjacent the upper end of the working barrel, said diaphragm being connected between two adjacent lengths of the working barrel and threaded exteriorly for connection with the coupling member 6. This diaphragm has a central opening 7 therethrough to accommodate the sucker rod which reciprocates therein; and has a plurality of downwardly opening valves 8 therein. These valves may be of any ordinary construction, but I have shown the usual flap valve pivoted adjacent the openings and held by springs 9 upwardly into closed position.

The plunger which constitutes the principal part of my invention comprises an upper head 10 which is reduced toward the lower end to provide a downwardly extending tubular portion 11 upon which the expanding means is adapted to seat The expanding means comprises a sleeve 12 having a fiat upper. face 13 to contact with the lower shoulder of the head 10. Said sleeve 12 is of the full diameter of the head at its upper end at 14, but is recessed at 15 and tapered downwardly from said recessto the lower end thereof, thus providing a sleeve which is practically the shape of an inverted cone and slidable upon the tubular member 11 of the head. Referring now to the drawing wherein like parts are designated by like numerals Fitting over the lower tapered portion of the sleeve 12 is a second expanding sleeve 16. This sleeve is split lpngitudinally into four parts in the mannershown in Fig. 6 and has a lower annular flange 17 thereon of the full diameter of the head and is recessed on its outer face at18 to accommodate a series of expanding rings 19 there'on. These expanding rings 19 are split at one point, as shown at 20 in Fig. 2, so that they may be expanded to take up wear. Adjacent the upper and lower of the expanding rings 19 are soft metal sealing rings 21.

These rings are not split and when first introduced into the-pump barrel are slightly plunger itself.

yond the end of the tubular member fora distance suificient to engage with a second nut 23 having anupwardly extending reduced portion 24 threaded exterior/1y within the nut 22. Whenthe nut 23 is threaded originally into contact with the nut 22 a space is provided at 25 between the upper end 24 of the nut 23 and the lower end of the tubular portion 11 of the head so that a further tightening of the 'nut may be accom'plished.v The nut 23 is provided with a tubular passage 26 therethrough for connec:

. tion with the tubular sectionll of the. head so as to provide a passage upwardly for the fluid being pumped. A valve 27 is preferably formed in the passage 26 through the lower nut, this valve being shown as a-ball valve, the ball of which'is limited in its upward movement by a cross pin 28 fixed in thelower end of the tubular member 11 of the head. The lower face of the nut 23 has' a transverse notch or groove 29 by which thesaid nut may be turned when necessary, it being contemplated that at some point in the lowerportion of the working barrel a cross piece will be fixed against which this nut may be, loweredand held against rota-. tion for tightening the expanding sleeveupon the head of the plunger.

The upper end of the head is formed with a reduced upwardly extending tubular portion 30 threaded interiorly for connection with. an enlarged valve chamber 31, this valve chamber'accommodating -a ball valve 32 limited in its upward movement by a cross bar or pin 33 in the usual manner.

. The, upper end of the valve chamber is threaded interiorly to the lower .end 'of the sucker rod previously described.

The compression means described in my Patent No. 1,325,565, previously" referred to,

isemployed in connection with this pump.

This compression means includes the diaphragm 5 previously referred to and also comprises an inlet means for the compressed fluid so that the same may be forced upwardly through the sucker rod 3 to assist in raising the liquidffrom the well. This fluid may be compressed air, steam, water or other fiuidj'pumped into the pump barrel through the laterallyextending pipe34 in the upper end ofjthe said pump barrel. This compressed flu'id is forced past the valves 8 in the diaphragm 5 anddownwardly into contact with the plunger. It there finds uentrance through passages 35 which are formedj-iu'the upper end of the head 10 of the plunger extending diagonally downward for ce nnection with a short transverse pipe 36, thesaid pipevhaving an upwardly open- This. vaiee eliamberiis shown as cylindrical in shape andis perforated by epenings 38 therein. Said valve chamber-accommodates a cylindrical pin 39 which is tapered at the lower end 'atr40 for seating within the valve seat. The upper end of the valve 39 has a slightly enlarged head 41 which is tapered 7 2 arethen placed in position. -The sucker rod reciprocatesifluidti'ght through the dia phragm 5"so'that there will be no loss of pressure below. the said diaphragm; The reciprocation of-the plunger will itself act to draw air or other fluidinwardly through the pipe 34 and past the diaphragm so that on the upward movement of the plungerthe ,fiuid. will be compressedbelow the diaphragm and .will be hence forced through the passages 35 and 36, raising the valve 39 upwardly into contact with the pin 42, as shown in Fig. ,5, ,thus'allowing the fluid to escape through the openings 38 inthe valve chamber and, be projected upwardly through the sucker-rod The valve 32 above the plunger .is adapted to prevent too heavyla back pressuredue to the head-of water or the plungerand the working barrel, it then becoming necessaryto tighten-the plunger within the barrel. This is done by lowering the sucker rod until thenotch 25 in the lower face of the nut 23 is seated upon a cross piece in the working barrel and the sucker rod and plunger are'then rotated, thus acting to thread the tubular member 12 downwardly within the nuts 22 and 23. This serves to force the split ring-16 upwardly upon the tapered surface provided by the sleeve 12 and tends to expand the same. As the sleeve 16 isexpanded the metal rings .19 outside thereof are also,- expanded into close contact with the interior.

face of the working barrel this taking up I the wear which has occurred. As the sleeve 16 is forced toward the sleeve 12 the soft J In the modificationshown metal rings 21" are 'coinpressedbetween the 1 0,'side of working barrels The purpose of these soft metal rings is to prevent the moveh ment of the sleeves 12 and 16 toward each otherdurin the operation of the plunger and to hpl them properly spaced apart. 15 Being of-soft compressible metal, however, they are adapted to be flattened by the compression exerted by the =nuts22 and 23 thus. 5

allowing the metal rings or'washers 19 to be expanded as desired.

and 6, the parts there shown are ractically identicallwith those disclosed in in Figs. 2.,

Y. s 1 w i 3 inclusive with the exception of the ex-"" :Having thus described my invention, what 60 I: claim as new and desire to protect by Letters Patent is: 1. In a pump, a working barrel, a plunger reciprocable therein, said plunger compristo normally prevent the movement of said sleevestowa-rdeach other and means to exn pand said expanding sleeves and said rings whenidesired. b 4 2. n a pump aplunger a tu ularportion provided with aseat, a cbnicalsleeve slid;-

able thereon, sepia 'sleeve'fitting over said i? conical sleeve andsaid seat, a cylindrical recess on the outer face of said split sleeve 0' and :said conical sleeve, expanding rings in.

said recess, and soft metal rings'in said re-i 'P g e s 'HPO I -P11mp-p1ungerUscess between said-expanding rings and the 25' The sleeve 12' is recessed 'somewhatmore deeply at l5'.--to provi de a seat forahelical spring 44 therein, a similar spring {i4 finding ,*a seat in the outer recessed face of the split sleeve 16. These springs are strong in constructio'n and-are shown as rectangular in transverse section, thus tending to force the sleeves 12' and 16 apart and to prevent their being-jammed together by the reciprocating 'action of the pump during the operation thereof. It is clear, however, that the split sleeve '16 may be forced upwardly upon the sleeve 12', as previouslydescribed, thus com- .pressing the-springs 44 and expanding the rings 19. Without the springsfi or the soft metal rings '21 it is found that the strong v reciprocating action of the plunger will act to force the sleeve 16,upwardlyupon the -.tapered surface of the ring 12 and cause the expansion of the rings when this expansion 45 'is not desirable and would tend to lock the lunger within the working barrel and periiaps cause a breaking of the operating parts. By the use of the spring 44 and of the rings 21, however, the expanding rings 19 will preserve the desired diameter until they are positively expanded by file tightening of nuts 22- and 23 on the lower end of the plunger, in the manner described. "The-improvements thus disclosed. in'. connection 5 withmyinvention are extremely: important and together make up an operative device which will be positive inits action and simple inuconstruction, thus producing a:

more efiicient device.

shouldered ends ofsaid recess andadapted to' be compressed when said sleeves are forced toward each other, and a nut on said tubular portion operative while in the pum barrel toforce said split sleeve toward sai conical sleeve.

3. In a pump, a plunger including a head, a reduced tubular portion thereon, a conical sleeve on said reduced portion and bearing on said head, a split sleeve fitting over said, conical sleeve, expanding rings on said split sleeve, means to prevent accidental; niovement of said sleeves axially of said plunger and: positive means to force said expand ng sleeve axially of said conical sleeve and to expand said rings. a

4. In a pump, a

surface, expanding rings on said splits eeve, means to nomrally prevent axial movement of said sleeve, 1071i said tapered surface and I plunger, a taperedsur- 2 face thereon, a split sleeve on saidta red",

positive meansto force said split sleeve into 5' expanded position when. desired] 5. In a pump, a plunger comprising a head, a reduced tubular portion, a nut on the lower end thereof, an expanding collar between said head and nut ada ted tobe. v

expanded by the tightening of sai nut, split rings on'said collar and meansto hold said collar normally against expansion.

. In testimony whereof. I hereunto aflix'm signature this G ANVILLE A.;HUMASON.

the 15th day of January, A. D. 

